Why 18+?

I've decided to list myself as "18+" because the idea of kids tipping me gives me the creeps in all honesty. If it's like a 16 or 17 year old I don't really care, otherwise I can't help but imagine some kid getting mommy's credit card to support their favorite Youtuber and it kinda disturbs me. Plus, I'm not sure about the legal ramifications when it comes to that.
Not to mention, I plan on selling some of the files used for my comics as a download, so people who purchased them can edit them how they want. And one of my comic series is actually aimed for adults (it's not pornographic, but still).

If BMAC ever does stuff like ID verification in my area, I will remove it. Otherwise yeah, that's why I have the filter on.